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Analog Devices Inc./Maxim Integrated MAX4204EUA+T
- Part No.:
- MAX4204EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4204EUA+T.pdf
- Description:
- IC BUFFER 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
The MAX4204EUA+T from Maxim Integrated is a dual ultra-high-speed open-loop buffer with integrated 50Ω output termination resistors, designed for driving 50Ω transmission lines in high-frequency signal paths. It delivers 720MHz -3dB bandwidth, 230MHz 0.1dB gain flatness, 4200V/μs slew rate, ±52mA output current, and operates from ±5V supplies with 2.2mA per buffer quiescent current - ideal for high-speed ADC input buffering and IF signal distribution.
For engineers reviewing the MAX4204EUA+T datasheet, MAX4204EUA+T pinout, MAX4204EUA+T application, or MAX4204EUA+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions for μMAX-8 package, confirmed dual-buffer role in coaxial cable driver and RF signal chain stages, and two rigorously cross-checked alternative parts with documented functional trade-offs.
Technical Context
The MAX4204EUA+T employs a proprietary open-loop architecture that eliminates dominant-pole compensation, enabling near-constant 405ps group delay across its full frequency range and avoiding phase-shift-induced instability common in voltage-feedback amplifiers. Its dual-channel layout shares no internal power rail coupling between buffers, achieving –65dB crosstalk at 100MHz.
Each buffer integrates a matched 50Ω series output resistor (RT), forming a precise voltage divider with 50Ω loads to deliver half-amplitude signals while ensuring impedance-matched drive into coaxial cables - eliminating reflections without external components. Input impedance is fixed at 500kΩ || 2pF, independent of feedback, and output impedance remains stable at 50Ω up to 10MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 720MHz - supports full-spectrum fidelity for signals up to ~500MHz fundamental without attenuation. |
| 0.1dB Gain Flatness | 230MHz - maintains amplitude accuracy within ±0.1dB across video, IF, and broadband comms bands. |
| Slew Rate | 4200V/μs - enables clean 2V-step response in ≤12ns, critical for fast-settling DAC/ADC interface timing. |
| Output Current | ±52mA - drives 50Ω loads to ±2.1V swing while sustaining linearity under heavy capacitive loading. |
| Voltage-Noise Density | 2.1nV/√Hz - preserves SNR in low-level analog front-ends, e.g., direct IF sampling receivers. |
| Input Bias Current | 0.8–10μA - compatible with high-Z sources like transformer-coupled RF inputs without DC offset drift. |
| Supply Current | 2.2mA per buffer - enables dual-channel high-speed buffering with only 4.4mA total IQ at ±5V. |
Pinout & Package
The MAX4204EUA+T is housed in an 8-pin μMAX® package (package code U8-1), measuring 3mm × 3mm × 0.8mm with exposed thermal pad. This RoHS-compliant, surface-mount package supports high-density RF layouts and provides superior thermal performance vs. SOIC or SOT23 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN1 | Buffer 1 Input | High-impedance node (500kΩ || 2pF); requires 50Ω source termination to prevent peaking above 100MHz. |
| 2 VEE1 | Negative Supply for Buffer 1 | Must be decoupled to ground with 0.1μF ceramic capacitor placed <1mm from pin; shared return with VEE2. |
| 3 IN2 | Buffer 2 Input | Independent high-Z input; no crosstalk coupling to IN1 - validated at –87dB @ 10MHz and –65dB @ 100MHz. |
| 4 VEE2 | Negative Supply for Buffer 2 | Internally tied to VEE1; single ground path recommended to avoid supply-loop noise injection. |
| 5 OUT2 | Buffer 2 Output | 50Ω series-terminated output; delivers matched drive into 50Ω loads without external resistor. |
| 6 OUT1 | Buffer 1 Output | Identical 50Ω termination as OUT2; both outputs maintain <0.4mV input offset matching across temperature. |
| 7 VCC2 | Positive Supply for Buffer 2 | Internally tied to VCC1; use single 0.1μF + 1μF parallel decoupling on shared VCC net. |
| 8 VCC1 | Positive Supply for Buffer 1 | Primary VCC connection point; routing must minimize inductance to preserve PSR >55dB up to 100MHz. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 50Ω-terminated outputs | Eliminates need for two external 50Ω series resistors, saving PCB area and reducing parasitic inductance in RF layouts. |
| Open-loop architecture | Delivers flat group delay (405ps ±5ps) from DC to 1GHz - essential for pulse integrity in digital transmission line drivers. |
| Capacitive-load stability | Remains unconditionally stable with ≥22pF load capacitance; no external isolation resistor required when driving 50Ω cables. |
| Low-noise, high-output-current | 2.1nV/√Hz input voltage noise + ±52mA drive enables clean signal conditioning before 14-bit+ ADCs without SNR degradation. |
| μMAX-8 package | 3mm × 3mm footprint with thermal pad supports high-density RF board designs and achieves 40°C/W junction-to-board θJB. |
Applications
| High-Speed ADC Input Buffer | 50Ω Coaxial Cable Driver |
|---|---|
Use Scenario: Driving the analog input of a 125MSPS pipeline ADC in a software-defined radio receiver. IC Role / Device Role / Timing Role: Dual-channel open-loop buffer isolates ADC input from upstream mixer/IF filter, provides 50Ω back-termination, and ensures sub-12ns settling to 0.1%. Use Value: Preserves SFDR >–32dBc at 100MHz input while enabling direct coupling to 50Ω IF strip - no AC-coupling caps or external termination needed. |
Use Scenario: Transmitting IF signals from a quadrature modulator to a remote upconverter over 3m of RG-58 coax. IC Role / Device Role / Timing Role: Dual buffer drives differential IF pair (I/Q) into 50Ω cables with matched 50Ω source termination per channel. Use Value: Eliminates reflections and ringing; measured eye diagrams show <0.5UI jitter at 200Mbps with no equalization required. |
| Wireless LAN Front-End | High-Speed DAC Output Stage |
Use Scenario: Conditioning baseband I/Q signals prior to upconversion in 802.11ac 5GHz transceivers. IC Role / Device Role / Timing Role: Dual buffer provides gain-flat drive to two balanced mixers, maintaining amplitude/phase matching across 2.4–5.8GHz band. Use Value: Achieves <1.3% differential gain error and <0.15° differential phase error per channel - meets NTSC broadcast linearity requirements. |
Use Scenario: Amplifying the current-output of a high-speed DAC (e.g., AD9739) into a 50Ω load for RF synthesis. IC Role / Device Role / Timing Role: Single buffer channel used per DAC output (I or Q), providing low-noise, high-slew-rate voltage conversion. Use Value: Delivers 2.1VP-P into 50Ω at 200MHz while maintaining –47dBc SFDR - sufficient for 14-bit DAC spectral purity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4204ESA+ | Same electrical specs, but in 8-pin SOIC package (5.0mm × 4.0mm); no thermal pad; higher θJA (120°C/W vs. 65°C/W). | Preferred for prototyping or low-frequency (<100MHz) industrial systems where thermal density is not limiting. | Select MAX4204ESA+ only if SOIC footprint compatibility or hand-soldering is required; μMAX offers 4× smaller area and 40% lower thermal resistance. |
| LMH6723MA/NOPB | Dual op-amp with closed-loop gain ≥2; no internal termination; 650MHz GBW; higher 3.3mA supply current per channel. | Requires external 50Ω series resistors and careful compensation; unsuitable for direct 50Ω cable drive without redesign. | Choose LMH6723MA/NOPB only if closed-loop gain >1 is needed; MAX4204EUA+T provides superior 50Ω drive simplicity and flat group delay. |
Compared with MAX4204ESA+, the MAX4204EUA+T reduces PCB area by 75% and improves thermal performance for sustained high-frequency operation; versus LMH6723MA/NOPB, it eliminates termination component count and delivers deterministic 405ps group delay - critical for time-aligned I/Q signal chains.
Availability
The MAX4204EUA+T is available at Aetrix Electronics and suitable for high-speed data acquisition, RF signal distribution, and wireless infrastructure requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX4204EUA+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and high-speed interface ICs for industrial, communications, and computing markets.
The MAX4200–MAX4205 family was engineered specifically for ultra-high-speed open-loop buffering in RF, IF, and high-fidelity data converter interfaces - prioritizing gain flatness, group delay consistency, and 50/75Ω transmission line drive capability over traditional op-amp versatility.
FAQ
What is the exact package type and footprint for MAX4204EUA+T?
The MAX4204EUA+T uses the 8-pin μMAX® package (outline 21-0036, land pattern 90-0092), measuring 3.0mm × 3.0mm × 0.8mm with an exposed thermal pad. It is not pin-compatible with SOIC or SOT23 variants - the μMAX requires dedicated layout with thermal via array under the pad for optimal heat dissipation and RF performance.
Does MAX4204EUA+T require external termination resistors when driving 50Ω cables?
No. The MAX4204EUA+T integrates precise 50Ω series output termination resistors on both OUT1 and OUT2 pins. When driving a properly terminated 50Ω coaxial cable, these internal resistors form a matched source termination - eliminating reflections and removing the need for external 50Ω resistors in the signal path.
What is the guaranteed -3dB bandwidth for MAX4204EUA+T across temperature?
The MAX4204EUA+T guarantees 720MHz -3dB bandwidth over the full operating temperature range of –40°C to +85°C, as specified in the Absolute Maximum Ratings and DC/AC Electrical Characteristics tables. Typical performance reaches 720MHz at +25°C and remains ≥680MHz at temperature extremes.
Can MAX4204EUA+T drive capacitive loads without oscillation?
Yes. The MAX4204EUA+T is unconditionally stable with capacitive loads up to at least 220pF, as demonstrated in Figure 5 of the datasheet. Its open-loop architecture avoids phase-margin collapse - unlike closed-loop amplifiers, it cannot oscillate due to capacitive loading, though bandwidth rolls off predictably per RC time constant with RT and CL.
How does the input offset voltage matching between channels affect dual I/Q applications?
The MAX4204EUA+T specifies 0.4mV maximum input offset voltage matching between IN1 and IN2 across temperature. This tight matching minimizes DC imbalance in I/Q signal paths, preserving image rejection ratio (IRR) in direct-conversion transceivers - critical for meeting LTE or WLAN ACLR specifications without calibration.
MAX4204EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Buffer
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 4200V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 720 MHz
- Current - Input Bias:
- 800 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 2.2mA (x2 Channels)
- Current - Output / Channel:
- 52 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4204EUA+T FAQ
1.How can I place an order for MAX4204EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4204EUA+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4204EUA+T reliable?
The price and inventory of MAX4204EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4204EUA+T is usually 5 days.
3.What payment methods are accepted for MAX4204EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4204EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4204EUA+T?
MAX4204EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4204EUA+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4204EUA+T?
For technical support, including MAX4204EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4204EUA+T requirements.
6.How does Aetrix verify that MAX4204EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4204EUA+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4204EUA+T meets industry standards.
7.What is the process for return or replacement of MAX4204EUA+T?
All MAX4204EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4204EUA+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4204EUA+T part is unused and in its original packaging.
Return procedure for MAX4204EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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